Cumulative artillery-projectile.



P. ROGER'.

CUMULATIVE AHTILLERY PROJECTILE.

APPLICATION` FILED APR. l. 1916.

P. ROGER. CUMULATIVE ARTILLERY PROJECTILE.

APPLlCATiON FILED APR. l, 1916.

Patented Feb. 20, 1917.

2 SHEETS-SHEET 2 PETER ROGER, 0F MILFORD, MASSACHUSETTS.

l CUMULATIVE ARTILLERY-PROJECTILE.

To all whom t may concern.'

Be it known that I, PETER ROGER, a citizen of the United States, resident of Milford, in the county of Worcester and State of Massachusetts, have invented a certain new and useful Improvement in Cumulative Artillery-Projectiles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to make and use the same.

rlihis invention .relates to improvements in cumulative artillery projectiles used by land defending armies, battleships and aeroplanes as well', consisting of an outer casing, an inner container or canlster for thermit and means generating high temperature or intense heat, reciprocal casings or maga.- Zines for the expelling charges, and shrapnel charges which are expelled simultaneously with the melted metals at the time that the eiciency of the expelling charges bursts the outer casing.

And the object of my invention is to provide a yprojectile as set forth, possessing means of defense and destructiveness not before reached by means of other; projectiles.

The construction of this projectile is simple, safe, and inexpensive; as the materials used are the same as those used in constructing similar projectiles. V`With this projectile, if properly prepared and well handled, a premature explosion will not take place; as it explodes only when concussed,

at the time the target is reached or whenI some obstruction is met with during its trajectory flight.

With the foregoing and other objects in view the construction of this invention consists in such novel features, combination and arrangement of parts, as will be hereinyafter more fully described and illustrated in the accompanying drawings, and claimed.

In describing the invention in detail', reference will be had to the accompanying drawings, which are part of the specification, wherein like figures of reference indicate like or corresponding parts throughout the several views, .and in which, A

Figure 1 is a perspectiveview of the'outer casing of this projectile;

Fig. 2 is a longitudinal sectional view `of the projectile showing the arrangement of the several parts;

Fig. 3 is a transverse sectional view of the Specification. of Letters Patent.

Application filed April l, 1916. Serial No. 88,234.

Patented Feb. 20, 1917.v

of Fig. 2, but for of the casing 6 is projectile in the line 4 4. convenience sake the base shown;

Figa is a sectional view of the casings 11 and 13; Fig. 5 is a. and the rear end of the outer casing;

Fig. 6 is a perspective view of the casings 6 and 9;

Fig. 7 is a perspective view of the annular center plate or diaphragm in which the rear end of the casing 6 enters and is supported upon by its border 19;

Fig. 8 is a transverse sectional view of the casing 13 with the inclosed shrapnel charge taken on the line 5-5 of Fig. 2;

Fig. 9 is a perspective view of the spring catch 26 and its fastening means.

As particularly illustrated in the accompanying drawings numerals, 1 and 2 designate the outer casing and the belt or rifling band of this projectile; these parts may be made of any 4material possessing the requirements. suitable for this use, but cast steel is the preferable one;`1 and 7 designate the structure of the'outer casing.

An annular center plate or `disk is supported on a shoulder on the inside wall of the outer casing in the lined-4 of Fig. 2; the said disk has perforations 3, through which pass upwardly the gases emerging from the ignited expelling charge in the casing 21.

Thecasing 6 has a surrounding shoulder- 19 and outlets 6 in the lateral wall, which outlets communicate with the casing 21, and by its shoulder the said casing is properly supported upon the perforated disk. The rear edge of the casing 9 is properly matched to lit 'the threaded fore casing 6, when these the bottom of the former acts as a closure for the fore aperture of the latter. 20 designates the means generating high temperature or intense heat such as thermit, when ignited, by means such as barium peroxid and magnesium. The ignition of said mixture is effected through the instrumentality of the various expelling .charges in casings 6, 15 and 21, when the projectile bursts. The concentric tube 16 of the canister 9 has a longitudinal space l0 which communicates downwardly with the casing 6 and upwardly with the casing 15 through perforation 25 provided in its base.

The spherical projectiles shown at 8 are edge of the perspectlve-view of the cap made of steel and pierced horizontally and vertically as shown in dotted lines 17 and 18; and the said cavities filled with lyddite and the entrances to these cavities are then coated with a thick film of colloid nitrate.

11 designates the structure of the. casing 15 which has aperture 23 into which the expelling charge is introduced and secured,

therein by a matched plug 22; the bottom of the said casing has circular chamfers 23, in which the rim of the canister 9 and the tube 16 are inserted and the casings 11 and 13 supported thereupon. The plug 22.has perforations 22 and 247; into the former pass loosely the lateral rods 24 of the concussion hammer 12 at the time the projectile is concussed on impact with its target, and in the latter is circularly incased the fulminate priming 24. The cuneiform fore part of the hammer is incased between the balls in the front end shrapnel charge.

14 designates the tube for the time fuse, which tube communicates with the casing 6 and through channel 10 with the casing 15 and the fulminate priming.

The lock prevents safe opening of this projectile when once the parts are assembled, which lock consists of a flexible bolt or barbed knob spring 26 properly adjusted in the threaded engagement of the cap and the rear end of the outer casing or maybe arranged on the rim of said parts, and a matched socket 26'; when the said bolt or spring is once set into the socket it cannot be dislodged without damaging the casing, if some one of these projectiles, during the struggle, falls in the Ypossession of the enemy, thereafter. During the turning of the cap, the flexible bolt 26-is retained within a socket, until its catch end comes opposite the socket 26', when it springs into the socket, thus preventing backward turnings of the cap.

When this projectile is fired from a gun the flames emerging from the expelling charge ignite the'time fuse, and by this latter the Sparks of ignition are communicated to the gun powder stored within the casing 6; and of the flames developing from the said powder, part are forced through channel 6 into the casing 21, which is :filled with nitro-cellulose, and a part travel upwardly within space 10, which is lled with black powder, through access 25 into the casing 15, which is filled with melinite; and the flames emerging from the expelling charge 21 communicate the fire to the lyddite` contained within the spherical projectiles.

A defective time fuse or one of a too slow action would not prevent this projectile from exploding at the desired time; as the concussion of the projectile, at the time the target is reached or impacted during its trajectory flight, is directly imparted to the hammer by the reaction of the surrounding balls, and the stroke of the hammer at the fulminate priming causes the latter to emit the vsparks of ignition, by which the expelling charge of the casing 15 is set on lire, and those llames, traveling downwardly through channel 10 into casing 6 and outlets 6,are communicated to the expelling charge contained in the casing 21. i

The efficiency of the gases emerging from the burning meliiiite stored in the casing 15 compels the front end shrapnel charge to radiate upon a broader area than the surrounding shrapnel charge between the outer casing and the thermit.

Those reciprocal means of ignition are undeniable factors in the efficienty of this projectile .for that which it is intended to accomplish.

It is to be understood that the 'construction disclosed herein is illustrative but not restrictive and that the same maybe modified within the meaning andvscope ofthe claims which follow: f

Having thus described my invention, whaty I claim as new, and desire to secure by Letters Patent, is: Y

1. In a cumulative artillery projectile, .an assembled outer casing, a shrapnel charge of perforated shots incased in the front end of the projectile and said perforations filled with lyddite, thermit for generating intense heat expelling charges and means to ignite simultaneously the expelling charges to expel and radiate the shots and the thermit.

2. In a cumulative artillery projectile, an assembled outer casing, a shrapnel charge of perforated shots incased in the front end of the projectile and said perforations filled with explosive matter, a canister for thermit therein with a con( vitrio tu-be filled with inflammable matter, said thermit generating high temperature, expelling charges and means to ignite simultaneously the expelling charges to expel the shots and the thermit.

3. In a cumulative artillery projectile, an assembled outer casing, a shrapnel charge of perforated shots incased in the front end of the projectile, a canister for thermit therein with a concentric tube filled with inflammable matter, a second slii'apnel charge of perforated balls between the outer casing and the canister, said perforations being filled with explosive matter, said thermit generating high temperature, expelling charges and means to ignite simultaneously the expelling charges to expel and radiate the shrapnel charges and the thermit.

4. In a cumulative artillery projectile, an assembled outer casing, a shrapnel charge ofperforated shots incased in the front end of the projectile, a canister for thermit therein with a concentric tube filled with inflammable matter, a second shrapnel charge of perforated balls between the outer casing and the canister, said perforatioiis being filled with explosive matter, a concussion hammer set between the shots in the front end shrapnel charge and the fulminate priming beneath, vsaid thermit generating high temperature, expelling charges and means to ignite simultaneously the expelling charges to expel and radiate the shrapnel charges and the thermit.

5. In a cumulative artillery projectile, an assembled outer casing; a shrapnel charge of perforated shots incased in the front end of the projectile, a canister for thermit therein with a concentric tube filled with inflammable matter, a second shrapnel charge of perforated balls between the outer casing and the canister, said perforations being filled with explosive matter, a concussion hammer set between the shots in the front end shrapnel charge and the fulminate priming beneath, a series of concatenated casings for the expelling charges set thereupon and beneath the canister and in the rear end of the projectile, said thermit generating intense heat, and means to ignite simultaneously the expelling charges to eX`- pel and radiate the shrapnel charges and the thermit.

6. In a cumulative artillery projectile, an assembled outer casing, shrapnel charges of perforated balls filled with explosive and incased in the front end of the projectile and between the outer casing and the canister, a canister for thermit therein with a concentric tube filled with inflammable matter, a concussion hammer set between the shots in the front end shrapnel charge and the fulminate priming beneath, aseries of concatenated casings for the expelling charges set thereupon and beneath the canister and in the rear end of the projectile, an annular and perforated disk to support the canister and the casing beneath and the shrapnel charges, said thermit generating high temperature, and means to ignite simultaneously the expelling charges to expel and radiate the shrapnel charges and the thermit.

7. In a cumulative artillery projectile, an assembled outer casing, shrapnel charges of perforated balls filled with explosive, a canister for thermit therein-with a concentric tube filled with infiammable matter, a concussion hammer set between the shots in the front end shrapnel charge and the fulminate priming beneath, a series of con` catenated 'casings for the expelling charges set thereupon and beneath the canister and in the rear end of the projectile, an annular and perforated disk to support the canister and the casing beneath and the shrapnel charges, a tube for the time fuse extending from the rear end of the outer casing and communicating with the expelling charges and the fulminate priming and the shrapnel charges, said thermit generating intense heat, and means to ignite simultaneously the expelling charges to expel and radiate the shrapnel charges and the thermit.

8. In a cumulative artillery projectile, an assembled outer casing, shrapnel-charges of perforated balls filled with explosive, a canister for thermit therein with a concentric tube filled with inflammable matter, a concussion hammer, a series of concatenated casings for the expelling charges, an annular and perforated disk to support the canister and the casing beneath andthe shrapnel charges, a tube for the time fuse extending from the rear end of the outer casing and communicating with the expelling charges and the fulminate priming and the shrapnel charges, a lock to prevent safe opening of the projectile without damaging the casing, said thermit generating high temperature, and means to ignite simultaneously the expelling charges to expel and radiate the shrapnel charges and the thermit.

In testimony thereof I have hereunto affixed my signature.

PETER ROGER. 

